The concept was that all European nations had to seek to prevent one nation from becoming powerful, and thus national governments often changed their alliances in order to maintain the balance. The previous text is in English. Here is a translation to Swahili:
Dhana ilikuwa kwamba mataifa yote ya Ulaya lazima yangejaribu kuzuia taifa moja lisiwe lenye nguvu, na basi serikali za kitaifa mara nyingi zilibadili muungano wao ili kudumisha usawa.